Portable fan heater



FIG. 1 is a front-elevational view of a portable fan heater showing my new design;

FIG. 2 is a side elevation view thereof on a greatly reduced scale;

FIG. 3 is a bottom plan view thereof on a greatly reduced scale; and

FIG. 4 is a rear elevational view thereof on a reduced scale. 

The ornamental design for a portable fan heater, as shown. 